VDB
CVE-2026-78445
CVE-2026-78445
PUBLISHED
CVSS 9.8 CRITICAL
Windows Services for NFS ONCRPC XDR Driver Remote Code Execution Vulnerability
Reported by microsoft · Published September 8, 2026
Use after free in Windows Services for NFS ONCRPC XDR Driver allows an unauthorized attacker to execute code over a network.
Fixed versions
Upgrade to a fixed version or later. Language registries are listed first, then Linux distributions, then vendor products.
| Package | Ecosystem | Fixed in |
|---|---|---|
| windows_server_2022 | microsoft | 10.0.20348.5622 |
Risk scores
CVSS 3.1
9.8
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C
Affected products
| Vendor | Product | Versions |
|---|---|---|
| Microsoft | Windows Server 2012 | 6.2.9200.0 |
| Microsoft | Windows Server 2012 (Server Core installation) | 6.2.9200.0 |
| Microsoft | Windows Server 2012 R2 | 6.3.9600.0 |
| Microsoft | Windows Server 2012 R2 (Server Core installation) | 6.3.9600.0 |
| Microsoft | Windows Server 2016 | 10.0.14393.0 |
| Microsoft | Windows Server 2016 (Server Core installation) | 10.0.14393.0 |
| Microsoft | Windows Server 2019 | 10.0.17763.0 |
| Microsoft | Windows Server 2019 (Server Core installation) | 10.0.17763.0 |
| Microsoft | Windows Server 2022 | 10.0.20348.0 |
| Microsoft | Windows Server 2025 | 10.0.26100.0 |
| Microsoft | Windows Server 2025 (Server Core installation) | 10.0.26100.0 |
| microsoft | windows_server_2012 | 6.2.9200.0 |
| Microsoft | Windows Server 2025 | 10.0.26100.0 |
| Microsoft | Windows Server 2019 | 10.0.17763.0 |
| Microsoft | Windows Server 2022 | 10.0.20348.0 |
| Microsoft | Windows Server 2012 R2 (Server Core installation) | 6.3.9600.0 |
| Microsoft | Windows Server 2016 | 10.0.14393.0 |
| microsoft | windows_server_2019 | 10.0.17763.0 |
| microsoft | windows_server_2016 | 10.0.14393.0 |
| Microsoft | Windows Server 2016 (Server Core installation) | 10.0.14393.0 |
…and 8 more
Timeline
- Sep 8, 2026 Coalition ESS Score
- Sep 8, 2026 CVE Published
- Sep 9, 2026 EPSS Score (22 in total, the first dated here)
- Nov 10, 2026 CVE Updated
- Nov 11, 2026 Security Advisory
Query this with the API
The same record, from the CLI:
vulnetix vdb vuln CVE-2026-78445
vulnetix vdb fixes CVE-2026-78445Or with curl, using the org id and key from your account page:
curl -s -H "Authorization: ApiKey ${VULNETIX_ORG_ID}:${VULNETIX_API_KEY}" \
"https://api.vdb.vulnetix.com/v2/vuln/CVE-2026-78445/fixes/registry"The Community plan is free and allows 50 queries a day. Get a free API key · API quickstart
References
- Windows Services for NFS ONCRPC XDR Driver Remote Code Execution Vulnerability vendor-advisorypatch